Apple A1408 AirPort Extreme 5th Generation MD031B

Wireless protocols: IEEE 802.11a/b/g/n. Frequency bands: 2.4GHz and 5GHz simultaneously. Interoperable with Wi-Fi Certified 802.11a, 802.11b, 802.11g, or 802.11n enabled Mac computers, iPad, iPhone, iPod touch, and Windows-based PCs. NAT, DHCP, PPPoE, VPN Passthrough (IPSec, PPTP, and L2TP), DNS Proxy, SNMP, IPv6 (6to4 and manual tunnels). One Gigabit Ethernet WAN port for connecting a DSL or cable modem. Three Gigabit Ethernet LAN ports for connecting computers or network devices. USB 2.0 port for connecting a USB printer or USB external hard drive.